They are taken prisoners and discover that Tasha Yar's half-romulan daughter (Denise Crosby) is behind everything. She is plotting to send troops to Vulcan, masquerading as friendly Romulans. Here plan is thwarted when Picard, Data, and Spock rig a message which exposes the plan. The good guys then make their escape. In a touching parting scene, Picard and Spock have a mind-meld so that Picard can share Sarek's thoughts with Spock.